noun
liquid reservoir; tank for liquid
Refers to a container or space for holding a liquid, often in industrial, mechanical, or technical settings.
この装置には冷却水の液溜めが付いている。
This device has a reservoir for cooling water.
液溜めの容量を確認してください。
Please check the capacity of the liquid reservoir.
Compound of 液 (liquid) and 溜め (reservoir, from verb 溜める 'to accumulate'). The spelling 液溜め is a straightforward kanji compound with okurigana.